ibatis（mybatis）的学习工程 带详细注释

/** * */ package testmybatis.test; import java.io.IOException; import java.io.InputStream; import java.sql.Date; import java.util.List; import org.apache.ibatis.io.Resources; import org.apache.ibatis.session.SqlSession; import org.apache.ibatis.session.SqlSessionFactory; import org.apache.ibatis.session.SqlSessionFactoryBuilder; import testmybatis.po.Dept; import testmybatis.po.Emp; /** * @author Administrator * */ public class Test { private SqlSession session; /** * */ public Test() { //读取配置文件中的信息 try { InputStream is=Resources.getResourceAsStream("mybatisconfig.xml"); SqlSessionFactoryBuilder ssfb=new SqlSessionFactoryBuilder(); SqlSessionFactory ssf=ssfb.build(is); session=ssf.openSession(); is.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } /** * @param args */ public void method1(){ List<Emp> list=session.selectList("getall"); for(Emp emp : list){ System.out.println(emp.getEname()+" "+emp.getSal()); } } public void method2(int empno){ Emp emp=(Emp) session.selectOne("getone", empno); System.out.println(emp.getEmpno()+" "+emp.getEname()+" "+emp.getHiredate()); } public void method3(String job,double sal){ //给两个参数的时候进行封装 Emp emp=new Emp(); emp.setJob(job); emp.setSal(sal); List<Emp> list=session.selectList("getempbyjobandsal",emp); for(Emp e:list){ System.out.println(e.getEname()+" "+e.getJob()+" "+e.getSal()); } } public void method4(double sal){ List<Emp> list=session.selectList("getempbysal",sal); for(Emp e:list){ System.out.println(e.getEname()+" "+e.getJob()+" "+e.getSal()); } } public void method5(Emp emp){ int i=session.insert("addemp",emp); System.out.println("i is:"+i); //虽然XML配置了autocommit true但是还是要自己commit session.commit(); } public void method6(String ename,double change){ Emp emp=new Emp(); emp.setEname(ename); double sal=emp.getSal(); System.out.println("sal is"+sal+" "+"change is "+change); emp.setSal(sal+change); int i=session.update("updateemp", emp); System.out.println("update i:"+i); session.commit(); } public void method7(){ //xml返回的是Emp List<Emp> list=session.selectList("getempdept"); for(Emp emp:list){ System.out.println(emp.getEname()+" "+emp.getJob()+" "+emp.getDept().getDname()); } } public void method8(int deptno){ List<Dept> list = session.selectList("getempbydept",deptno); Dept dept=list.get(0); System.out.println(dept.getDname()); List<Emp> emplist=dept.getEmp(); for(Emp emp:emplist){ System.out.println(emp.getEname()+" "+emp.getSal()+" "+emp.getHiredate()); } } public static void main(String[] args) { Test t=new Test(); //t.method1(); //t.method2(7499); //t.method3("SALESMAN", 1250); //t.method4(1500); /*Emp emp=new Emp(); emp.setDeptno(20); emp.setEmpno(8000); emp.setEname("Tony"); emp.setHiredate(Date.valueOf("2000-11-20")); emp.setJob("SALESMAN"); emp.setSal(3000); t.method5(emp);*/ //t.method6("Tony", 500); //t.method1(); t.method8(20); } }